plugins/epan/wimax/msg_dsx_rvd.c

   1 /* msg_dsx_rvd.c
   2  * WiMax MAC Management DSX-RVD Message decoder
   3  *
   4  * Copyright (c) 2007 by Intel Corporation.
   5  *
   6  * Author: Lu Pan <lu.pan@intel.com>
   7  *
   8  * Wireshark - Network traffic analyzer
   9  * By Gerald Combs <gerald@wireshark.org>
  10  * Copyright 1999 Gerald Combs
  11  *
  12  * SPDX-License-Identifier: GPL-2.0-or-later
  13  */
  14
  15 /* Include files */
  16
  17 #include "config.h"
  18
  19 #include <epan/packet.h>
  20 #include "wimax_mac.h"
  21
  22 void proto_register_mac_mgmt_msg_dsx_rvd(void);
  23 void proto_reg_handoff_mac_mgmt_msg_dsx_rvd(void);
  24
  25 static dissector_handle_t dsx_rvd_handle;
  26
  27 static int proto_mac_mgmt_msg_dsx_rvd_decoder;
  28 static int ett_mac_mgmt_msg_dsx_rvd_decoder;
  29
  30 /* fix fields */
  31 static int hf_dsx_rvd_transaction_id;
  32 static int hf_dsx_rvd_confirmation_code;
  33
  34
  35 /* Decode DSX-RVD messages. */
  36 static int dissect_mac_mgmt_msg_dsx_rvd_decoder(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, void* data _U_)
  37 {
  38         unsigned offset = 0;
  39         proto_item *dsx_rvd_item;
  40         proto_tree *dsx_rvd_tree;
  41
  42         {       /* we are being asked for details */
  43                 /* display MAC message type */
  44                 dsx_rvd_item = proto_tree_add_protocol_format(tree, proto_mac_mgmt_msg_dsx_rvd_decoder, tvb, offset, -1, "DSx Received (DSX-RVD)");
  45                 /* add MAC DSx subtree */
  46                 dsx_rvd_tree = proto_item_add_subtree(dsx_rvd_item, ett_mac_mgmt_msg_dsx_rvd_decoder);
  47                 /* display the Transaction ID */
  48                 proto_tree_add_item(dsx_rvd_tree, hf_dsx_rvd_transaction_id, tvb, offset, 2, ENC_BIG_ENDIAN);
  49                 /* move to next field */
  50                 offset += 2;
  51                 /* display the Confirmation Code */
  52                 proto_tree_add_item(dsx_rvd_tree, hf_dsx_rvd_confirmation_code, tvb, offset, 1, ENC_BIG_ENDIAN);
  53         }
  54         return tvb_captured_length(tvb);
  55 }
  56
  57 /* Register Wimax Mac Payload Protocol and Dissector */
  58 void proto_register_mac_mgmt_msg_dsx_rvd(void)
  59 {
  60         /* DSX_RVD display */
  61         static hf_register_info hf_dsx_rvd[] =
  62         {
  63                 {
  64                         &hf_dsx_rvd_confirmation_code,
  65                         { "Confirmation code", "wmx.dsx_rvd.confirmation_code", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL}
  66                 },
  67                 {
  68                         &hf_dsx_rvd_transaction_id,
  69                         { "Transaction ID", "wmx.dsx_rvd.transaction_id", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL}
  70                 }
  71         };
  72
  73         /* Setup protocol subtree array */
  74         static int *ett[] =
  75                 {
  76                         &ett_mac_mgmt_msg_dsx_rvd_decoder,
  77                 };
  78
  79         proto_mac_mgmt_msg_dsx_rvd_decoder = proto_register_protocol (
  80                 "WiMax DSX-RVD Message", /* name       */
  81                 "WiMax DSX-RVD (dsx_rvd)",   /* short name */
  82                 "wmx.dsx_rvd"                /* abbrev     */
  83                 );
  84
  85         proto_register_field_array(proto_mac_mgmt_msg_dsx_rvd_decoder, hf_dsx_rvd, array_length(hf_dsx_rvd));
  86         proto_register_subtree_array(ett, array_length(ett));
  87         dsx_rvd_handle = register_dissector("mac_mgmt_msg_dsx_rvd_handler", dissect_mac_mgmt_msg_dsx_rvd_decoder, proto_mac_mgmt_msg_dsx_rvd_decoder);
  88 }
  89
  90 void
  91 proto_reg_handoff_mac_mgmt_msg_dsx_rvd(void)
  92 {
  93         dissector_add_uint("wmx.mgmtmsg", MAC_MGMT_MSG_DSX_RVD, dsx_rvd_handle);
  94 }
  95
  96 /*
  97  * Editor modelines  -  https://www.wireshark.org/tools/modelines.html
  98  *
  99  * Local variables:
 100  * c-basic-offset: 8
 101  * tab-width: 8
 102  * indent-tabs-mode: t
 103  * End:
 104  *
 105  * vi: set shiftwidth=8 tabstop=8 noexpandtab:
 106  * :indentSize=8:tabSize=8:noTabs=false:
 107  */